A distributed CTL model checker

Model checking is nowadays being used as advanced technique to analyse, design and debug reactive systems. This paper gives an overview of our recent work on implementing a new interactive CTL model checker. In contrast to previous approaches, our tool permits an interactive design of the CTL models as state-transition graphs, and is based on client/server architecture. The server part embeds the core of the CTL model checker and is published as a Web service. A C# client provides an intuitive graphical interface for interactive design of CTL models. Java and C# APIs are available for programmatic construction of large models. Experimental results are encouraging, showing that our tool is able to handle large systems efficiently.